US3034690A

US3034690A - Film dispensing carton

Info

Publication number: US3034690A
Application number: US727587A
Authority: US
Inventors: Godfrey H Klun
Original assignee: Union Carbide Corp
Current assignee: Union Carbide Corp
Priority date: 1958-04-10
Filing date: 1958-04-10
Publication date: 1962-05-15
Anticipated expiration: 1979-05-15

Description

y 5, 1962 G. H. KLUN 3,034,690

FILM DISPENSING CARTON Filed April 10, 1958 2 Sheets-Sheet 1 26 I W W M1 1 WI 6 5 a u :1 I H 5 35 35223.

Pull Film Down F To Tear 44 v' M 5 5J5 5* W5 h g r I 5 |a 9 -F|5 an 9 u i /6 g 115 v n n a 28 INVENTOR a0 5 GODFREY H. KLUN l BY 9 ATTORNEY nited States This invention relates to a new and improved carton for dispensing wrapping film and more particularly relates to a car-ton containing a retractable cutting edge.

Thin films, such as aluminum foil, wax paper and plastic film, are generally used for wrapping foodstuffs and other miscellaneous products. conventionally, these films are marketed in rolls which are contained in cartons having a serrated cutting edge thereon for separating the film to be used from the roll. As these films have developed, their manufacturers have constantly striven to make them thinner, tougher, and more stretchable. The tougher the film, the more difiicult it is to cut by ordinary means. It has been found that cutting can be facilitated by the use of a multi-level serrated edge, that is one that has teeth of different heights. This construction, however, necessitates the use of extremely sharp teeth which are hazardous to the user.

It is therefore an important object of this invention to provide a safe film-dispensing carton.

It is another object of this invention to provide a film dispensing carton with a retractable cutting edge.

In the accompanying drawing:

FIG. 1 is an isometric view of a carton embodying the invention, as stored, with one end, a portion of the front and a portion of the top broken away to show details of construction.

FIG. 2 is similar to FIG. 1 showing a portion of a carton embodying the invention in use.

FIG. 3 is a layout view of a ooverless carton for use in connection with this invention, ready for assembly.

FIG. 4 is a layout view of a cutting edge and supporting member for use in connection with this invention, ready for assembly.

FIG. 5 is a layout view of a cover for the carton of FIG. 3, ready for assembly.

This invention comprises the incorporation of a retractable cutting member within a new and improved film dispensing carton.

Referring to FIG. 3 of the accompanying drawing, the coverless carton is composed of a bottom 10, having an aperture 11 therein for purposes to be explained below, ends 12 and 13-, a front 14, a back 16 and

tabs

15, 17, 19 and 21. The removable cover, as best shown in FIG. 5, is composed of a top 18 with end flaps 20 and 2.2, and longitudinal flaps 24- and 26 extending therefrom.

In assembling the carton for use in accord with this invention, the member 25 supporting the cutting edge 27 as best shown in FIG. 4 is adhered, along the strip 28, to the bottom adjacent the back 16. The supporting member is thusly secured to the bottom 10 and free to pivot about the precreased line 30 and will conform to the shape of the carton by folding along line 32. According to this construction, the supporting member 25 is L-shaped with its long arm rotatably secured to the bottom 10.

Assembly of the carton is completed, as shown in FIG. 1, by folding the front 14- =and back 16 to positions parallel with each other and perpendicular to the bottom 10, folding the

tabs

15, 17, 19 and Z1 to positions perpendicular to the bottom 10, the front 14 and the back 1 6, and folding the

ends

12 and 13 to positions perpendicular to the bottom 10 and adjacent the

tabs

15, 17, 19 and 2.1.

The roll of film 34 to be dispensed is placed in the carton resting on the supporting member 25 and the film end 36 thereof is separated from the roll. The cover,

ice

assembled by folding the

end flaps

20 and 22 to positions parallel with each other and perpendicular to the top 18 and folding the longitudinal flaps 24 and 2s to positions perpendicular to both the top 18 and the end flaps 2 0 and 22, is then inserted over the film roll 34-. The cover in its assembled position has the end flaps 20* and 22 resting on the bottom 10, and contained within and adjacent to the

tabs

15, 17, 19 and 21. The

longitudinal flaps

24 and 26 are contained within the front 14 and the back 16 defining therebetween a slot for the removal of the film end 36 and a slot wherein the cutting edge 27 resides.

The aperture 11, referred to above, is provided in the bottom 10 for the insertion therethrough of rotating means (suitably a finger or fingers as shown in FIG. 2). The rotating means raises the cutting edge 27 into cutting relation by pivoting the supporting member 25 around the precreased line 30. At the same time as raising the cutting edge 27 into cutting relation, the rotating means, through the supporting member 25, holds the film roll 34 so that the film end 36 will not slip back into the carton, or pull out when cutting.

To use the dispenser of this invention as shown in FIG. 2, the fihn end 36, residing in the space between the flap 26 and the back 16, is pulled out and \across the top 18 to any length desired. The cutting edge 27 is then raised by inserting rotating means in the aperture 11 and pushing upward. The film is then cut by pulling it down across the cutting edge 27. The rotating means is withdrawn and the cutting edge 27 returns to the space between the flap 24 and the front 14 by the weight of the roll 34, or inherent spring-back of the member 25. Film of a width substantially equal to that of the top 18 remains outside the carton for easy handling the next time film is desired.

In the preferred form of this invention the carton is cardboard, the film is drawn over the top before cutting, the cutting edge is metal and has variable height serrations. The member supporting the cutting edge is cardboard and L shaped and it is attached to the bottom by gluing and precreasing in such a manner as to make the member rotatable around the crease. However, the carton, cover and supporting member may be made of any suitable material. If desired, the film could be drawn from the space between the front and the fiap adjacent to the cutting edge. Further, the cutting edge need not necessarily be multilevel serrations but may be ordinary serrations, a knife edge or any other convenient means. While this invention is preferably for use in dispensing polyethylene film, it is adapted to use in conjunction with any film.

What is claimed is:

1. An elongated substantially rectangular carton having an aperture in the bottom wall thereof; a movable angular cutting blade support member overlying said aperture; a cutting blade carried by said support member spaced from the portion thereof overlying said aperture; and said carton having an elongated slot opening on a longitudinal edge thereof adjacent said cutting blade, said blade being disposed in alignment with said slot and movable therethrough between a retracted position within said carton and a projected exposed cutting position; wherein said carbon is adapted to house a roll of sheet-film material, in contact with said support member, normally freely rotatable thereon, said support member being movable by manipulation through said aperture to simultaneously (1) engagedly position said roll between said member and an inside wall of said carton, and (2) project said blade through said slot for severing withdrawn material.

2. A dispenser as described in claim 1 having two substantially parallel slots therein; one of said slots receiving said blade therethrough and the other of said slots receiving said sheet-film material therethrough.

3. A dispenser as described in claim 1 wherein said member is L shaped and pivotally mounted Within said carton.

4. A dispenser for rolled sheet-film material comprising an elongated substantially rectangular carton having an elongated slot adjacent a longitudinal edge thereof; an elongated movable angular cutting blade support member Within said carton; and a cutting blade mounted on said support member adjacent to said slot and movable therethrough; said carton having an aperture in a Wall of said carton adjacent said blade support; said carton being adapted to receive a roll of said sheet-film material which roll is in contact with said blade support in a normally References Cited in the file of this patent UNITED STATES PATENTS 1,885,996 Duffin Nov. 1, 1932 2,333,924 Gorbatenko I Nov. 9, 1943 2,628,179 Bergstein Feb. 10, 1953 2,798,552 Aldrich July 9, 1957